Lamp-burner.



PATENTED APR. 30, 1907.

J. A. MOSHER.

LAMP BURNER. APPLICATION FILED AUG. 29, 1904.

J Mar/la y .UNITED STATES PATENT OFI TOE.

JOHN A. MOSHER, OF PARK RIDGE, ILLINOIS, ASSIGNOR TO COMPANY, A CORPORATION OF ILLINOIS.

I/VESTLAKE LAMP-BURNER.

Specification of Letters Patent.

Patented April 30,1 907.

Application filed August 29, 1904. Serial No. 222,570.

1"0 all whom it may concern.-

Be it known that I, JOHN A. Mosnnn, a citizen of the United States, and a resident of Park Ridge, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Lamp-Burners, of which the following is a speci fication, and which are illustrated in the accompanying drawings, forming a part thereof.

This invention relates to that class of burners which are especially intended for use in switch and signal lamps and are adapted for long service without attention.

The object of the invention is to provide a construction. by means of which a flame may be maintained by the use of oil as a fuel, for a long period without smothering by a char formed at the end of the wick. This object is attained by the device hereinafter described and illustrated in the accompanying drawings, in which Figure 1 is a plan view of the burner; Fig. 2 is a side elevation of the same, the chimney being shown in detail; and Fig. 3 is a detail central vertical section of the burner tube.

The body or base 10 of the burner may be of any suitable form and is provided with the usual threaded nipple 11 adapted to engage with the font, not shown. From the body 10 there rises a plurality of posts 12, 12 which carry an annular gallery 13 from which rises chimney supporting arms 14 shown as of the type of arms covered by the Patent No. 750,455, granted January 26, 1904, to \Villiam S. Hamm.

The Wick tube 15 rises centrally from the body 10 projecting into the chimney flue and is of less diameter than the aperture of the gallery 13. From the top of the wick tube there rises a cup 16 of greater diameter than the tube and provided with air induction ports 17, the combined area of which is preferably insufficient to provide an air supply adequate to the supporting of an illuminating flame, so that the wick 18 projecting from the tube 15 must be raised to the top of the cup 16 when in use. The lamp chimney is shown at 19.

In use the wick is raised to the level of the rim of the cup 16. Air enters the chimney flue or combustion chamber through the aperture of the gallery 13 and combustion is provided for by the air currents entering through the ports 17 supplemented by air I l l reaching the wick over the rim of the cup. The flame rises from the end of the wick in pyramidal form. Should the end of the wick become incrusted with carbon or cinder of any kind, the -flame is still maintained by the vapor escaping from the side of the wick betweenits end and the bottom of the cup, mixing with the air entering through the ports 17. The diameter of the cup 16 is such that the cinder formed at the top of the wick, even when the fuel is of poor grade, will not entirely close the top of the cup, and so long as it remains open the vapor can issue therefrom and the flame will be maintained.

Vhile the wick tube is shown as terminating at the level of the cup bottom, and this form is to be preferred, it is obvious that any construction in which the walls of the wick are uncovered or in part uncovered within the cup will come within the scope of the invention.

I claim as my invention 1. In a lamp burner, in combination, a wick tube; and a cup concentric with and of greater diameter than the tube and rising above the top thereof and having air induction ports, the combined capacityof the ports being insufficient to provide for illuminating combustion.

2. In a lamp burner, in combination, a body; an annular gallery supported above the body; a wick tube rising through and of less diameter than the gallery; and a cup rising above the top of the tube and having perforated walls the combined capacity of the perforations being insullicient to provide for illuminating combustion.

3. In a lamp burner, in combination, a body; a gallery supported thereon; chimneysupporting arms rising from the gallery; a wick-tube rising between the arms so as to enter a chimney supported thereby; and a cup concentric with the tube and rising above the top thereof and being of less diameter than the chimney for which the burner is adapted and of greater diameter than the wick-tube and having perforated walls the combined capacity of the perforations being insufficient to provide for illuminating combustion.

4. In a lamp burner, in combination, a wick tube, and a cup concentric therewith and of greater diameter than the tube and having apertures adjacent to its bottom the THE ADAMS &

top of the tube terminating below the top of the cup and the combined capacity of the apertures being insufiicient to provide for illuminating combustion.

5. In a lamp burner, a Wick tube having at its upper end a flaring and upstanding annular flange having air ports the combined ca- JOHN A. MOSHER.

Witnesses:

LoUIs K. GlLLsoN, CHARLES B. GILLSON. 

